//
//  HYYVistorView.swift
//  Hyy9Weibo
//
//  Created by Air on 16/3/25.
//  Copyright © 2016年 hyy. All rights reserved.
//

import UIKit

//1.定义协议，继承和类的格式时一样的，不是OC的<NSObjectProtocol>,当协议方法定义为optional（可选实现），协议需要加上@objc
@objc protocol HYYVistorViewDelegate: NSObjectProtocol{
    //2.定义方法
    //注册按钮被点击
    optional func vistorViewDidClickRegisterButton()
    
    //登陆按钮被点击
    optional func vistorViewDidClickLoginButton()
}

class HYYVistorView: UIView {

    //3.定义代理属性 id <HYYVistorViewDelegate>
    //代理需要设置weak，不然可能会导致循环引用
    weak var delegate : HYYVistorViewDelegate?
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        prepareUI()
    }
    /**
     设置访客视图
     
     - parameter image:   图片名称
     - parameter message: 文字
     */
    func setupVistor(image:String,message:String){
        homeView.hidden = true
        self.sendSubviewToBack(coverView)
        iconView.image = UIImage(named: image)
        messageLabel.text = message
        
    }
    /**
     开始旋转
     */
    func startRotation(){
        let rotation = CABasicAnimation(keyPath: "transform.rotation")
        rotation.toValue = M_PI * 2
        rotation.duration = 20
        rotation.repeatCount = MAXFLOAT
        //完成的时候不要移除
        rotation.removedOnCompletion = false
        //添加到图层上
        iconView.layer.addAnimation(rotation, forKey: nil)
    }
    
    private func prepareUI(){
        backgroundColor = UIColor(white: 237/255.0, alpha: 1)
        //1.添加子控件
        self.addSubview(iconView)
        self.addSubview(coverView)
        self.addSubview(homeView)
        self.addSubview(messageLabel)
        self.addSubview(registerButton)
        self.addSubview(loginButton)
        //2.添加约束
        iconView.translatesAutoresizingMaskIntoConstraints = false
        coverView.translatesAutoresizingMaskIntoConstraints = false
        homeView.translatesAutoresizingMaskIntoConstraints = false
        messageLabel.translatesAutoresizingMaskIntoConstraints = false
        registerButton.translatesAutoresizingMaskIntoConstraints = false
        loginButton.translatesAutoresizingMaskIntoConstraints = false
        
        //转轮
        /*
         1.item:要约束的view
         2.attribute:要约束view的属性
         3.relatedBy:参照
         4.toItem:要参照的View
         */
        //约束要添加，约束统一添加到父控件上去
        addConstraint( NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal,toItem: self, attribute: NSLayoutAttribute.CenterX, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.CenterY, relatedBy: NSLayoutRelation.Equal, toItem: self, attribute: NSLayoutAttribute.CenterY, multiplier: 1, constant: -40))
        
        //遮罩
        addConstraint(NSLayoutConstraint(item: coverView, attribute: NSLayoutAttribute.Leading, relatedBy: NSLayoutRelation.Equal, toItem: self, attribute: NSLayoutAttribute.Leading, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: coverView, attribute: NSLayoutAttribute.Trailing, relatedBy: NSLayoutRelation.Equal, toItem: self, attribute: NSLayoutAttribute.Trailing, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: coverView, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: self, attribute: NSLayoutAttribute.Top, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: coverView, attribute: NSLayoutAttribute.Bottom, relatedBy: NSLayoutRelation.Equal, toItem: registerButton, attribute: NSLayoutAttribute.Bottom, multiplier: 1, constant: 0))
        
        //小房子
        addConstraint( NSLayoutConstraint(item: homeView, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal,toItem: iconView, attribute: NSLayoutAttribute.CenterX, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: homeView, attribute: NSLayoutAttribute.CenterY, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.CenterY, multiplier: 1, constant: 0))
        
        //消息label
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.CenterX, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.Bottom, multiplier: 1, constant: 16))
        //当toitem等于nil时，attribute一定要为NSLayoutAttribute.NotAnAttribute
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1, constant: 280))
        
        //注册按钮
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: NSLayoutAttribute.Leading, relatedBy: NSLayoutRelation.Equal, toItem: messageLabel, attribute: NSLayoutAttribute.Leading, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: messageLabel, attribute: NSLayoutAttribute.Bottom, multiplier: 1, constant: 16))
        
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1, constant: 100))
        
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1, constant: 35))
        
        //登陆按钮
        
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: NSLayoutAttribute.Trailing, relatedBy: NSLayoutRelation.Equal, toItem: messageLabel, attribute: NSLayoutAttribute.Trailing, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: messageLabel, attribute: NSLayoutAttribute.Bottom, multiplier: 1, constant: 16))
        
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: NSLayoutAttribute.Width, relatedBy: NSLayoutRelation.Equal, toItem: registerButton, attribute: NSLayoutAttribute.Width, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: registerButton, attribute: NSLayoutAttribute.Height, multiplier: 1, constant: 0))
    }
    
    //MARK: - 按钮点击事件
    func didClickRegisterButton(button:UIButton){

        //4.调用代理的方法
        // vistorViewDidClickRegisterButton? :表示代理实现了这个方法就调用这个方法，没有实现就不调用
        delegate?.vistorViewDidClickRegisterButton?()
    }
    
    func didClickLoginButton(){
    
        delegate?.vistorViewDidClickLoginButton?()
    }
    //MARK: - 懒加载
    //转轮
    private lazy var iconView:UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    //遮罩
    private lazy var coverView:UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    //小房子
    private lazy var homeView:UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    //消息label
    private lazy var messageLabel:UILabel = {
        let label = UILabel()
        //设置
        label.text = "关注一些人，看看有什么惊喜！"
        label.textAlignment = NSTextAlignment.Center
        label.font = UIFont.systemFontOfSize(18)
        label.numberOfLines = 0
        label.sizeToFit()
        
        return label
    }()
    
    //注册按钮
    private lazy var registerButton: UIButton = {
        let button = UIButton()
        //设置
        button.setBackgroundImage(UIImage(named: "common_button_white_disable"), forState: UIControlState.Normal)
//        button.titleLabel,不要用这个来设置按钮的label
        button.setTitle("注册", forState: UIControlState.Normal)
        button.setTitleColor(UIColor.orangeColor(), forState: UIControlState.Normal)
        //添加点击事件
        button.addTarget(self, action: #selector(HYYVistorView.didClickRegisterButton(_:)), forControlEvents: UIControlEvents.TouchUpInside)
        
        return button
    }()
    
    //登陆按钮
    private lazy var loginButton: UIButton = {
        let button = UIButton()
        //设置
        button.setBackgroundImage(UIImage(named: "common_button_white_disable"), forState: UIControlState.Normal)
        button.setTitle("登陆", forState: UIControlState.Normal)
        button.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
        //添加点击事件
        button.addTarget(self, action: #selector(HYYVistorView.didClickLoginButton), forControlEvents: UIControlEvents.TouchUpInside)
        
        return button
    }()

}
